发布商品，商品图片使用oss服务器地址

2026-07-06 08:53:03 +08:00
parent a0466f023e
commit 5ba69eb935
60 changed files with 2776 additions and 157 deletions
@@ -1,9 +1,12 @@
 import { Injectable } from '@nestjs/common';
+import type { Prisma } from '@prisma/client';
 import { calcBenefitAmount, calcBenefitSummary, generateCouponNo } from '@dukang/domain';
 import { PrismaService } from '../../common/prisma/prisma.module';
 import { serializeBigInt } from '../../common/decorators/current-user.decorator';
 import { buildBenefitLedgerEvent, benefitLedgerWhere } from '../../common/event/event.helpers';

+export type CouponAllocation = { couponId: string; amount: number };
+
@Injectable()
 export class BenefitService {
  constructor(private readonly prisma: PrismaService) {}
@@ -85,4 +88,73 @@ export class BenefitService {
    });
    return serializeBigInt({ coupon, ledgers });
  }
+
+  /** 核销扣减券余额（乐观锁），由 redeem 模块调用 */
+  async deductCoupons(
+    tx: Prisma.TransactionClient,
+    allocations: CouponAllocation[],
+    refType: 'STORE',
+    refId: bigint,
+  ) {
+    for (const alloc of allocations) {
+      const coupon = await tx.benefitCoupon.findUniqueOrThrow({
+        where: { id: BigInt(alloc.couponId) },
+      });
+      const allocAmount = alloc.amount;
+      const updated = await tx.benefitCoupon.updateMany({
+        where: { id: coupon.id, version: coupon.version, balance: { gte: allocAmount } },
+        data: {
+          usedAmount: { increment: allocAmount },
+          balance: { decrement: allocAmount },
+          version: { increment: 1 },
+          status: Number(coupon.balance) - allocAmount <= 0 ? 'USED_UP' : 'ACTIVE',
+        },
+      });
+      if (updated.count === 0) throw new Error('BENEFIT_DEDUCT_CONFLICT');
+
+      const newBalance = Number(coupon.balance) - allocAmount;
+      await tx.commonEvent.create({
+        data: buildBenefitLedgerEvent({
+          userId: coupon.userId,
+          couponId: coupon.id,
+          type: 'REDEEM',
+          amount: -allocAmount,
+          balanceAfter: newBalance,
+          refType,
+          refId,
+        }),
+      });
+    }
+  }
+
+  /** 退款作废权益 */
+  async voidCouponsOnRefund(orderId: bigint) {
+    const coupons = await this.prisma.benefitCoupon.findMany({
+      where: { orderId, status: { in: ['ACTIVE', 'USED_UP'] } },
+    });
+    for (const coupon of coupons) {
+      const balance = Number(coupon.balance);
+      if (balance <= 0 && coupon.status === 'USED_UP') continue;
+      await this.prisma.$transaction(async (tx) => {
+        await tx.benefitCoupon.update({
+          where: { id: coupon.id },
+          data: { status: 'VOID', balance: 0 },
+        });
+        if (balance > 0) {
+          await tx.commonEvent.create({
+            data: buildBenefitLedgerEvent({
+              userId: coupon.userId,
+              couponId: coupon.id,
+              type: 'REFUND_VOID',
+              amount: -balance,
+              balanceAfter: 0,
+              refType: 'ORDER',
+              refId: orderId,
+              remark: '退款作废权益',
+            }),
+          });
+        }
+      });
+    }
+  }
 }